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skip glicko calculation when the game result is obvious

skip-glicko-obvious
Thibault Duplessis 2021-09-30 14:51:49 +02:00
parent 63ab3e23aa
commit 64ebba75c7
1 changed files with 23 additions and 15 deletions
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8
modules/round/src/main/PerfsUpdater.scala
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@ -114,6 +114,13 @@ final class PerfsUpdater(
)
private def updateRatings(white: Rating, black: Rating, game: Game): Unit = {
// if the winner is rated more than 500 higher, leave both ratings untouched.
// this helps prevent farming and keeping deviation low by playing 1500? players
val isObviousResult = game.winnerColor.?? {
case chess.White => white.getRating - black.getRating
case chess.Black => black.getRating - white.getRating
} > 500
if (!isObviousResult) {
val result = game.winnerColor match {
case Some(chess.White) => Glicko.Result.Win
case Some(chess.Black) => Glicko.Result.Loss
@ -131,6 +138,7 @@ final class PerfsUpdater(
case e: Exception => logger.error(s"update ratings #${game.id}", e)
}
}
}
private def mkPerfs(ratings: Ratings, users: (User, User), game: Game): Perfs =
users match {